The Eaton PDD33G0400TFAN is a 400A, 240V, 3 Pole circuit breaker with a hardware mounting bracket suitable for interior industrial applications. It features a bolt-on mounting style, ABS/plastic material construction, and a triple pole double throw (3PDT) contact configuration. With a maximum amperage of 400A and a current rating of 351-400A, this main breaker from Eaton's Power Defense line offers reliable and efficient operation for circuit protection and control in a variety of electrical systems.